<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>BMI身体质量指数测试</title>
</head>
<body>

<form action="/bmi">
  <input type="text" name="height" placeholder="身高(m)">
  <input type="text" name="weight" placeholder="体重(kg)">
  <input type="submit">
</form>

</body>
</html>